http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
李明賢,崔閏和 弘益大學校 科學技術硏究所 2005 科學技術硏究論文集 Vol.16 No.-
This paper presents a coverage-aware, energy-efficient node scheduling scheme for wireless sensor networks. It identifies redundant nodes using a coverage-aware scheme to reduce redundant data transmissions and to use their energy for communication to the base station. Simulation results show that the proposed scheme can noticeably improve system lifetime while maintaining sensing coverage.
( Myeong Su Chu ),( Hyeon Jeong Yun ),( Myeong Jun Song ),( Seung Won Jung ),( Young Seok Kim ),( Si Hyun Bae ),( Jong Young Choi ),( Sang Wook Choi ),( Seung Kew Yoon ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: Biopsy is still the gold standard for the diagnosis of nonalcoholic steatohepatitis (NASH) but the definition may vary in evaluation of biopsies for clinical trials. Recently, a scoring system (steatosis, activity, fibrosis[SAF]) allowing the use of an algorithm (fatty liver inhibition of progression [FLIP]) reported for the classification of liver injury in morbid obesity. We evaluated the application of SAF score and FLIP algorithm in Korean patients with nonalcoholic fatty liver disease (NAFLD). Methods: We analyzed the 126 patients with biopsy-proven NAFLD in 5 centers in Korea from Aug, 2008 to April, 2016. Results: In total study populations, 56 patients (44.4 %) were diagnosed to NASH, 70 (55.6%) as NAFLD including 60 patients of a gray zone (NAS 3-4) according to NAS scoring system. Based FLIP algorithms, 72 patients (57.1 %) were categorized as NASH, 54 (42.9 %) as NAFLD. 21 patients (35%) in gray zone (NAS 3-4) and 5 patients (NAS ≥5) were categorized as NASH and steatosis, respectively. The activity score (ballooning+ lobular inflammation) enabled discriminating NASH. All patients with NASH had A ≥3, whereas 3 patients (5.2%) with A2 had NASH. Especially, the presence of ballooning in activity score was the significant factor to discriminate NASH and steatosis. This activity score was also closely correlated with both alanine aminotransferase (ALT) and aspartate aminotransferase (AST) and Fragmented cytokeratin-18, respectively (P=0.000, 0.023, 0.006 respectively). Fibrosis grade by SAF score was significantly correlated with NAFLD fibrosis score and fibroscan (P=0.026, 0.000, respectively). Conclusions: The FLIP algorithm and SAF score system in the NAFLD may provide the favorable tools in Korean patients. Among the SAF score, the ballooning of hepatocyte may be an important factor to discriminate NASH and NAFLD, although it is one of the major limitations of liver biopsy.
무선 센서 네트워크에서 동시다발적으로 발생하는 허위 보고서 주입 공격과 웜홀 공격에 대한 보안 기법
최현명(Hyeon-Myeong Choi),조대호(Tae-Ho Cho) 한국지능시스템학회 2010 한국지능시스템학회 학술발표 논문집 Vol.20 No.2
본 논문은 무선 센서 네트워크에서 센서 노드의 특징과 취약점을 이용하여 발생 가능한 다양한 공격 기법 중허위 보고서 주입 공격과 웜홀 공격이 동시다발적으로 발생하는 경우에 이를 효율적으로 탐지하고 방어하기 위한 기법을 제안한다. 기존의 제안된 기법들은 각각의 공격에 대한 방어만을 고려하여 실제 네트워크에서 동시다발적으로 발생하는 공격에 대한 방어는 불가능 하였다. 제안 기법은 메시지 확인 응답을 통하여 허위보고서의 여과 단계와 웜홀 노드의 검출 단계를 수행 한다. 또한 검출된 허위 보고서는 즉시 제거되고 웜홀 노드가 검출이 되면 메시지의 전달 경로를 효율적으로 수정하여 에너지 효율성을 유지하는 동시에 높은 수준의 보안성을 제공한다.
( Hyeon Myeong Hong ),( Joong Sub Choi ),( Jaeman Bae ),( Won Moo Lee ),( Jeong Min Eom ),( Jihyun Keum ) 대한산부인과학회 2020 대한산부인과학회 학술대회 Vol.106 No.-
Objective: To analyze the efficacy and safety of the WOMEN CARE(SJ global, bucheon). Methods: This study is conducted by randomized controlled trial of 20 patients with Women care(Tap water) and 22 patients with control group(Dressing with Povidone iodine) from September 1, 2019 to Febrary 28, 2020 in Hanyang University Hospital. Each group patients were visited our center four times. At first visit(VISIT 1), patients were examed of STD 12 and cervical culture. About 7 days later(VISIT 2), they were visited and grouped by Women care or povidone iodine dressing by randomized selection. They were dressing by each method. After 2 days later(VISIT 3) from VISIT2, cervical culture was done. After 2 days later(VISIT4) from VISIT3, cervical culture was done finally. Results: There were no significant differences in demographic and clinical characteristics between the two groups. We compared the results of cervical culture gram positive bacteria at VISIT 1 and VISIT3. The quantitative decrease of bacteria was seen the 6 patients of 20 patients in WOMEN CARE group. In the control group, The quantitative decrease of gram positive bacteria was seen the 5 patients of 22 patients. Conclusion: By this study, there was no significant side effect of WOMEN CARE; Vaginal itching sensation, redness and burning sensation. We confirmed the safety and efficacy of the WOMEN CARE.
Hyeon-Jae Shin,Jang-Young Choi,Hyung-Il Park,Seok-Myeong Jang IEEE 2012 IEEE transactions on magnetics Vol.48 No.11
<P>This study is devoted to the analysis of the vibration characteristics of a permanent magnet synchronous motor (PMSM) through investigation into its electromagnetic vibration sources. For this purposed, we derive analytical solutions for the magnetic fields generated by permanent magnets (PMs) in terms of a magnetic vector potential and a two-dimensional (2-D) polar coordinate system. A 2-D permeance function is also introduced in order to consider slotting effects. The electromagnetic vibration sources such as torque ripple, cogging torque, and radial force density are analyzed using these solutions. The analytical results are validated extensively with finite element (FE) analyses. The fast Fourier transformation (FFT) analysis is employed for investigating the specific harmonic orders of the electromagnetic vibration sources that affect the vibration of the PMSM. Finally, mechanical modal analysis results and test results such as vibration measurements are obtained to confirm the validity of the analysis methods presented in this paper.</P>
Biocontrol Activity of Acremonium strictum BCP Against Botrytis Diseases
Choi, Gyung-Ja,Kim, Jin-Cheol,Jang, Kyoung-Soo,Nam, Myeong-Hyeon,Lee, Seon-Woo,Kim, Heung-Tae The Korean Society of Plant Pathology 2009 Plant Pathology Journal Vol.25 No.2
Biological control activity of Acremonium strictum BCP, a mycoparasite on Botrytis cinerea, was examined against six plant diseases such as rice blast, rice sheath blight, cucumber gray mold, tomato late blight, wheat leaf rust, and barley powdery mildew in growth chambers. The spore suspension of strain BCP showed strong control activities against five plant diseases except against wheat leaf rust. On the other hand, the culture filtrate of A. strictum BCP was effective in controlling only cucumber gray mold and barley powdery mildew. Further in vivo biocontrol activities of A. strictum BCP against tomato gray mold were investigated under greenhouse conditions. Control efficacy of the fungus on tomato gray mold increased in a concentration-dependent manner. Treatment of more than $1{\times}10^6$ spores/ml significantly controlled the disease both in tomato seedlings and in adult plants. The high disease control activity was obtained from protective application of the strain BCP, whereas the curative application did not control the disease. Foliar infections of B. cinerea were controlled with $1{\times}10^8$ spores/ml of A. strictum BCP applied up to 7 days before inoculation. In a commercial greenhouse, application of A. strictum BCP exhibited the similar control efficacy with fungicide procymidone (recommended rate, $500{\mu}g/ml$) against strawberry gray mold. These results indicate that A. strictum BCP could be developed as a biofungicide for Botrytis diseases under greenhouse conditions.